I've used several AimPoints with excellent results. Currently have a 2X in use and like it a lot. Makes target ID easier and defines the aiming point better for us old guys w/o losing the wide field of view.
That said, my most often used AR is mounted with a 1.5-4.5 variable scope. If you're used to aiming with the scope, I don't see much problem using a 1.5X in close range situations. If it's too close for that, just look along side the barrel and rip a few off.